Setting up a login to Easyblog via Facebook and Twitter

Hi

Please accept my apologies in advance, I am not very technical. I was trying to set up a way where users could login to our blog page using Facebook or Twitter and was taken to a page on 'autoposting' (though I'm still unclear if this was actually the page I needed or not to be able to do this). I started the process of developing a Facebook app and got stuck, please see attached screenshots.

Any pointers gratefully received.